Well if they would keep the same pace as the F35C program and asuming FC-31 is the equivilant of the X-35. we should see them enter service by 2031. My bet is they are gonna be ready before that..Why is the J-31 variant taking so long compared with the J-20 plane?
I don't think there is a significant delay. "双过半” in the title means finishing half of the scheduled work when the year is half over and the article is mainly about how those people dealt with the two-month lag caused by the epidemic.My guess is that the delay is COVID-related.